Practice Direct Cell Counts (7.4.1) - Microbiology – The Unseen World of Single-Celled Life
Students

Academic Programs

AI-powered learning for grades 8-12, aligned with major curricula

Professional

Professional Courses

Industry-relevant training in Business, Technology, and Design

Games

Interactive Games

Fun games to boost memory, math, typing, and English skills

Direct Cell Counts

Practice - Direct Cell Counts

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is a counting chamber used for?

💡 Hint: Think about how you would visualize the cells.

Question 2 Easy

What does the Coulter counter measure?

💡 Hint: Consider the principles of electricity and cells.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the main function of a counting chamber?

To incubate cultures
To count cells
To isolate colonies

💡 Hint: Think about the size and structure of the chamber.

Question 2

True or False: A Coulter counter can distinguish between viable and non-viable cells.

True
False

💡 Hint: Recall the characteristics of the Coulter counter.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

A microbiologist needs to evaluate a culture that appears dense but is unsure about the viability of cells. What methods would you recommend to assess both total and viable cell counts?

💡 Hint: Consider the advantages of each method discussed.

Challenge 2 Hard

If a Coulter counter shows a reading of 1 x 10^8 cells/mL but you suspect that it includes dead cells, how would you go about confirming the living population, and what are the implications?

💡 Hint: Think about how to differentiate between living and total cell counts.

Get performance evaluation

Reference links

Supplementary resources to enhance your learning experience.